Theoretical prediction and experimental study of a ferromagnetic shape memory alloy: Ga2MnNi
Year: 2008
Type: article
Abstract: We predict the existence of a ferromagnetic shape memory alloy ${\text{Ga}}_{2}\text{MnNi}$ using density-functional theory. The martensitic start temperature $({T}_{M})$ is found to be approximately proportional to the stabilization energy of the martensitic phase $(\ensuremath{\delta}{E}_{\text{tot}})$ for different shape memory alloys. Experimental studies performed to verify the theoretical results show that ${\text{Ga}}_{2}\text{MnNi}$ is ferromagnetic at room temperature and ${T}_{M}$ and ${T}_{C}$ are 780 and 330 K, respectively. Both from theory and experiment, the martensitic transition is found to be volume conserving that is indicative of shape memory behavior.
Source: Physical Review B
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2046212181